Phillipa says that [tex](27-9)[/tex]×[tex]3[/tex] : [tex](9+18)=42[/tex]
On simplifying it is found that B. She is not correct. The correct answer is [tex]2[/tex]
Simplification
Simplification is the process of replacing a mathematical expression with an equivalent one, that is simpler and usually shorter.
How to simplify an algebraic expression?
Apply BODMAS to simplify an algebraic expression.
When a fraction is given, simplify the numerator and denominator of the expression separately to simpler terms.
Thus, simplifying the numerator [tex](27-9)[/tex]×[tex]3=18[/tex]×[tex]3=54[/tex]
Simplifying the denominator [tex]9+18=27[/tex]
Now, divide the numerator and denominator of [tex]\frac{54}{27}[/tex] by [tex]27[/tex]
Thus,
[tex]\frac{54}{27}=\frac{\frac{54}{27} }{\frac{27}{27} }=\frac{2}{1}=2[/tex]
So, [tex](27-9)[/tex]×[tex]3[/tex] : [tex](9+18)=2[/tex]
Hence, Phillipa says that [tex](27-9)[/tex]×[tex]3[/tex] : [tex](9+18)=42[/tex]
B. She is not correct. The correct answer is [tex]2[/tex].
Learn more about simplification here-https://brainly.com/question/17579585
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